Answer:5.5 mL
Explanation:I learned how to solve it in Chem.
• how long it has been occurring
• if it gets worse at a particular point in the day
•Do you get chest pain, palpitations or ankle swelling?
•Does it come on or get worse when you lie flat?
•Does anything bring it on? For example, pollen, pets or medication?
•Do you smoke?
•Do you also have a cough, or bring up phlegm?
•How active are you usually?
•What’s your job or occupation?
•Is your breathlessness related to certain times at work?
•Do you have a history of heart, lung or thyroid disease or of anaemia?
•Have you made any changes in your life because of your shortness of breath?
•Do you feel worried or frightened, depressed or hopeless?
•What have you done to help you cope with the way you’re feeling?
•Does it come and go or is it there all the time?
•Is there any pattern to your breathlessness?
Answer:
Blocking the rays physically....
Explanation:
There have two ways that sunscreen protect minerals nanoparticles from uv radiations. Those are; blocking the rays physically
Absorbing them chemically.
Minerals powders are in nanoparticles from they come on clear without leaving much of white residue on skin
Answer:
Given
Per Kg of body mass, there is 3 gram of potassium
And abundance of three isotopes are as follows
Potassium-39, Potassium-40, and Potassium-41. Have abundances respectively as 93.26%, 0.012% and 6.728%.
1) A body weighing 80 Kg will have 240 grams of potassium. And the amount of Potassium-40 will be 0.012% of 240 gram
= 240*0.012/100 = 0.0288 gram.
2) Dose in (Gy) = (energy absorbed)/(mass of the body) = ( 1.1*106*1.6*10-19)/(80) = 22*10-10 J/kg
Dose (in siverts) = RBE*Dose(in Gy) = 1.2*22*10-10 = 26.4*10-10
Answer:
D. to assist the person trapped in the house
Explanation:
hope this helps :)
